import Vue from 'vue'
import Router from 'vue-router'

Vue.use(Router)

/* Layout */
// 导入 Layout 架子
import Layout from '@/layout'

// todo：动态路由表：需要通过权限控制的路由;
// 导入 8 个动态路由规则对象
import approvals from './modules/approvals'
import attendances from './modules/attendances'
import departments from './modules/departments'
import employees from './modules/employees'
import permissions from './modules/permissions'
import salarys from './modules/salarys'
import settings from './modules/settings'
import socal_securitys from './modules/socal_securitys'

// 动态路由表数组(需要权限控制)
export const asyncRoutes = [
  departments,
  settings,
  employees,
  approvals,
  attendances,
  permissions,
  salarys,
  socal_securitys
]

/**
 * Note: sub-menu only appear when route children.length >= 1
 * Detail see: https://panjiachen.github.io/vue-element-admin-site/guide/essentials/router-and-nav.html
 *
 * hidden: true                   if set true, item will not show in the sidebar(default is false)
 * alwaysShow: true               if set true, will always show the root menu
 *                                if not set alwaysShow, when item has more than one children route,
 *                                it will becomes nested mode, otherwise not show the root menu
 * redirect: noRedirect           if set noRedirect will no redirect in the breadcrumb
 * name:'router-name'             the name is used by <keep-alive> (must set!!!)
 * meta : {
    roles: ['admin','editor']    control the page roles (you can set multiple roles)
    title: 'title'               the name show in sidebar and breadcrumb (recommend set)
    icon: 'svg-name'/'el-icon-x' the icon show in the sidebar
    breadcrumb: false            if set false, the item will hidden in breadcrumb(default is true)
    activeMenu: '/example/list'  if set path, the sidebar will highlight the path you set
  }
 */

/**
 * constantRoutes
 * a base page that does not have permission requirements
 * all roles can be accessed
 */

// constantRoutes静态路由表(所有角色都可访问的路由)
export const constantRoutes = [
  // 登录
  {
    path: '/login',
    component: () => import('@/views/login/index'),
    // hidden: true 表示当前路由不会出现在主页左侧的菜单栏里
    hidden: true
  },
  // 404
  {
    path: '/404',
    component: () => import('@/views/404'),
    hidden: true
  },
  // Layout页面
  {
    path: '/',
    component: Layout,
    redirect: '/dashboard',
    children: [
      // 首页
      {
        path: 'dashboard',
        // name属性必须添加，因为后续要基于name属性去userInfo.roles.menu中去筛选
        // name属性的值必须跟userInfo.roles.menu的值一致(动态路由的筛选标识)
        name: 'dashboard',
        component: () => import('@/views/dashboard/index'),
        // title：控制左侧菜单栏的名称；icon：菜单图标
        meta: { title: '首页', icon: 'dashboard' }
      }
    ]
  }

  // 404 page must be placed at the end !!!
  // { path: '*', redirect: '/404', hidden: true }
]

// 创建路由实例，把new Router写在了函数中
const createRouter = () => new Router({

  // 路由模式，mode: 'history'历史模式，网址不带#；mode: 'hash'哈希模式，网址带#
  // mode: 'history', // require service support

  // 路由切换的时候让页面回到最顶部
  scrollBehavior: () => ({ y: 0 }),

  // 临时让静态路由表和动态路由表全部合并
  // routes: [...constantRoutes, ...asyncRoutes]
  // 路由表中写死的只开放留静态路由表
  routes: constantRoutes
})

// 调用创建路由实例函数，接收路由实例
const router = createRouter()

// Detail see: https://github.com/vuejs/vue-router/issues/1234#issuecomment-357941465
// 重置路由的函数
export function resetRouter() {
  // 删除所有路由表信息
  const newRouter = createRouter()
  router.matcher = newRouter.matcher // reset router
}

export default router
